(a) Any person who violates any provision of § 21a-93 shall, on conviction thereof, be imprisoned not more than six months or fined not more than five hundred dollars or both; but, if the violation is committed after a conviction of such person under this subsection has become final, such person shall be imprisoned not more than one year or fined not more than one thousand dollars or both.

(b) Notwithstanding the provisions of subsection (a) of this section, any person who violates any provision of § 21a-93, with intent to defraud or mislead, shall be imprisoned not more than one year or fined not more than one thousand dollars or both.

(c) No person shall be subject to the penalties of subsection (a) of this section for having violated subsection (a) or (c) of § 21a-93 if he establishes a guaranty or undertaking signed by and containing the name and address of the person residing in this state from whom he received the article in good faith, to the effect that such article is not adulterated or misbranded within the meaning of this chapter. In such guaranty this chapter shall be designated by title.

(d) No publisher, radiobroadcast licensee, advertising agency or agency or medium for the dissemination of advertising, except the manufacturer, packer, distributor or seller of the article to which the advertisement relates, shall be subject to the penalties of subsection (a) of this section by reason of his dissemination of any false advertisement, unless he has refused, on the request of the commissioner, to furnish the name and address of the manufacturer, packer, distributor, seller or advertising agency in the United States, who caused him to disseminate such false advertisement.